I think his "Captain America can do that?" moment was after the forest fight, when he deflected Thor's hammer resulting in that huge shockwave. After that, he didn't really do anything impressive except for how he led the team. I always fast forward during the part where he fights those aliens in that building with the bomb, then gets blown out the window. It's not horrible, but it's so lackluster compared to what everyone else does that I get bored watching it.